Learning to Use Regular Expressions
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Saved by 62 people (20 private), first by anonymouse user on 2006-03-30
Public Sticky notes
This tutorial is aimed at users and programmers who have
begun to work with tools that use regular expressions, but
who are not quite comfortable with the intricacies of them.
Even users who may have used regular expressions in the past,
but have forgotten some of the details can benefit from this
as a refresher.
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Two special characters are used in almost all regular
expression tools to mark the beginning and end of a line:
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caret and dollarsign is
that they match zero-width patterns
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a period can stand for any
character
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caret symbol can actually have two different meanings
in regular expressions. Most of the time, it means to match
the zero-length pattern for line beginnings. But if it is
used at the beginning of a character class, it reverses the
meaning of the character class. Everything not
included in the listed character set is matched
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Public Comment
on 2006-08-23 by bluecockatoo
on 2008-08-10 by tboelens